Calked sole.



J. H. JASPER. CALKED SOLE. APPLICATION FILED FEB-12. I91?- Patented Nov. 20, 1917.

UNITED STATES PATENT OFFICE.

JOSEPH H. JASPER, O F DETROIT, MICHIGAN.

CALKED SOLE.

Tolall whomz't may concern Be it known that I, Joscrn H. JASPER, a citizen of the United States of America, rcsidin at Detroit, in the county of Wayne l and btate of Michigan, have invented oer tain new and useful Improvements in Galked Soles, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to calked soles for 26 dered inoperative shoes or the like and refers: more particularly to a dual purposed steel calked rubher top sole for all-around lumbermens use.

provide a construction which can be used for resoling worn-out footwear and more particularly for attaching to the soles of boots, moccasins or lumbermen s cruising shoes; toprovide a construction in which the steel ca] 8 are combined with rubber corruga tions or projections which will prevent slipping in either direction; to provide a construction in which the calks will not be renby being frozen up with snow and ice and thus rendered slippery; to provide a construction in which the steel reinforcement not only makes the sole stiffer but provides a certain degree of resiliency so as to make the soles easier to walk on; to provide a construction in which the calks are-mounted at the junctions of the frame work which is vulcanized into the rubber so that the calks will have a certain give and will not injure the feet as where steel calks 16 Among the objects of the invention are to are mounted directly upon the leather soles;

and in general to provide a new and iinproved sole of the character above referred to which canbe applied either when the sole is manufactured oras a replacement or ati tachment to shoes, moccasins or other footwear.

The invention also resides in such features of construction and arrangements and combinations of parts as will more fully hereinpfter appear.

p In the drawings:

Figure 1 IS a bottom plan view of a calked sole embodying my invention;

' Fig. 2 is a longitudinal section showing the sole attached to a moccasin;

Fig. 8 is a eross section taken at right anglee to Fig. 2. :Describm shown in t e in detail the construction drawings, A-designates the Specification of Letters Patent.

prises a rubber body Patented Nov. 20, 1917.

Application filed February 12, 1917. Serial No. 148,136.

shoe or moccasin h-avingthe sole B to which is secured the calked sole C embodymg my invention.

is vulcanized a steel frame E formed of longitudinal bars F and transverse bars G riveted together at H. In order to more completely secure the steel frame in the rubber I preferably employ a wire screen I connected to the framewor as shown in Fig. 3.

At the junction of the steel bars G and F the steel calks J are mounted and preferably secured to the framework by the rivets, screws or other securing members employed for fastening the framework together. Thus when the steel framework is vulcanized into the rubber body portion D the calks are secured in place. further advantage, in that the calks are held in relation to the rubber by the entire framework, thus giving a wide bearing surface and preventing the tearing out of the calks which would happen if they were indie vidually vulcanized into the rubber.

The bars F are preferably also provided with apertures K through which the calked sole C can be nailed or sewed to the sole B of the moccasin or other footwear to which it is attached. If the sole is attached to the moccasin'or other member not provided with a raised heel, the rubber of the calked sole is thickened at one end to provide a raised heel L, as shown in Fig. 2, in which case the framework is offset at M to take care of the offset in the heel portion.

In addition to the calks the lower or wearing surface of the'calked sole has a plurality of ribs or rubber corrugations N which extend diagonally and meet at the center to form a square. Those ribs N which are at the heel portion extend diagonally in the op 0 a distance substantially equal to the depth of the ribs N and N. This arrangement will prevent the calks from being frozen up with snow or ice and will give the lumbermen or other wearers of the shoe a safe 00tll'1g irrespective of the weather or whether he is walking on ice, frozen slippery timber or other slippery surfaces. Various changes in the details of construction, how-' This construction has a In detail the calked sole comportion D into which ever, can be made within the scope of my yond the plane of the main bod portion, invention. and ribs formed on the lower sur ace of-the What I claim as my invention is: body portion, said. calks projecting beyond 10 A calked sole for shoes or the like, comthe lower surface of the body portion a. dis- 5 prising a resilient body portion, a metal *tance substantially equal to the depth of l framework vulcanized therein, calks carthe ribs.

riecl by said framework and projecting be- JOSEPH H. JASPER. 

